Potassium ferricyanide crystals are used for etching and in eloctroplating applications. Many factors affect the crystal growth and therefore the size of these crystals. These factors include the...

Potassium ferricyanide crystals are used for etching and in eloctroplating applications. Many factors affect the crystal growth and therefore the size of these crystals. These factors include the solubility of the compound and the evaporation process. An experiment was conducted to determine whether the weight of the final crystal (y, in grams) is affected by the amount of initial solid (x1, g), the amount of water (x2, ml), and/or the temperature of the water (x3, °F). Minitab was used to analyze the data and to estimate the regression coefficients in the